Adalo is a great LowCode/NoCode Builder. It is very easy to learn, and due to a lot of examples, learning content and a great community, it is straightforward to learn. The way they implemented databases is brilliant as you can either use their internal solutions or connect via API to external sources like Airtables etc.

I can drag and drop the elements I want in my app onto the screens in my app without having to code them in the app.

Adalo is a nocode software environment where developer does not need to have a knowledge of pure code. Learning basic concepts of database and development one can really build an excellent app or webpage. It's packages are also reasonable and affordable. Backup system is best. Integration with other software is easy and it is based on full API. So no risk for native functionality. Saves time in bootrap , css and all for basic development. Choose colour and that's done. I think that is what called as nocode system.